Nouns

(n)laddersteps consisting of two parallel members connected by rungs; for climbing up or down
(n)ladderascending stages by which somebody or something can progress“he climbed the career ladder”
(n)run, ladder, ravela row of unravelled stitches“she got a run in her stocking”

Verbs

(v)ladder, runcome unraveled or undone as if by snagging“Her nylons were running”